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Search Publications by: Jim Booth (Fed)

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Displaying 51 - 75 of 237

Characterization of Transmission Lines with Nonlinear Dielectric Materials

November 28, 2017
Author(s)
Aaron M. Hagerstrom, Christian J. Long, Nathan D. Orloff, James C. Booth, Eric J. Marksz
Nonlinear transmission lines are interesting for two broad reasons: first, they have several direct device applications (i.e. harmonic generation, and phase shifters), and second, they provide a way to characterize nonlinear materials at mm-wave

A Multistate Single-Connection Calibration for Microwave-Microfluidics

October 12, 2017
Author(s)
Xiao Ma, Charles A. Little, Chris Long, Jordi Mateu, James Booth, James Hwang, Nate Orloff
With emerging medical, chemical, and biological applications of microwave-microfluidic devices, many researchers desire a fast, accurate calibration that can be achieved in a single connection. However, traditional on-wafer or coaxial calibrations require

Temperature dependence of nonlinearity in high-speed, high-power photodetectors

September 30, 2017
Author(s)
Josue Davila-Rodriguez, Holly Leopardi, Tara Fortier, Xiaojun Xie, Joe C. Campbell, James Booth, Nate Orloff, Scott Diddams, Franklyn Quinlan
We present an experimental study of the nonlinearity of modified uni-traveling carrier (MUTC) photodiodes at cryogenic temperatures. At 120 K, the amplitudeto-phase (AM-to-PM) conversion nonlinearity is reduced by up to 10 dB, resulting in nearly 40 dB AM

Comprehensive circuit model of auto-limiting superconductor devices and systems

May 31, 2017
Author(s)
Jordi Mateu, C Collado, A Hueltes, D Garcia-Pastor, R Perera, Nikhil M. Joshi, Xifeng Lu, Nate Orloff, Jim Booth
This paper presents a phenomenological equivalent circuit to model the phenomenon occurring when a section of superconducting transmission line transits from the superconductor to the normal state. This phenomenon allows the use of superconductors for the

3-Port Frequency Selective Absorptive Limiter

May 1, 2017
Author(s)
A Hueltes, Eduard Rocas, Carlos Collado, Jordi Mateu, D Garcia-Pastor, James Booth, Rafael P. Robles
This paper proposes a novel 3-port absorptive limiter for frequency selective circuits based on a similar configuration than a conventional 90º hybrid coupler. This circuit uses the switching features existing in common diode devices to changes between the

A Multireflect-Thru Method of Vector-Network-Analyzer Calibration

March 1, 2017
Author(s)
Arkadiusz Lewandowski, Wojciech Wiatr, Nate Orloff, James Booth
We present a new method for two-port vector-network-analyzer calibration which uses multiple offset-reflect standards and a flush thru connection. Offset-reflect standards consist of sections of the same uniform transmission-line with different lengths

New Methods for Series-Resistor Calibrations on Lossy Substrates up to 110 GHz

December 1, 2016
Author(s)
Liu Song, Nate Orloff, Song Liu, Charles A. Little, Xifeng Lu, James Booth, IIja Ocket, Arkadiusz Lewandowski, Dominique Schreurs, Bart Nauwelaers
We present two new methods to perform seriesresistor calibrations on lossy substrates. Lossless calibration substrates, which are required by the traditional calibration comparison technique, are not needed. The proposed methods rely on the multiline TRL

On-wafer Magnetic Resonance of Magnetite Nanoparticles

May 11, 2015
Author(s)
Charles A. Little, Stephen E. Russek, James C. Booth, Pavel Kabos, Robert J. Usselman
Magnetic resonance measurements of ferumoxytol and TEMPO were made using an on-wafer transmission line technique with a vector network analyzer, allowing for broadband measurements of small sample volumes (4 nl) and a small numbers of spin (1 nmole). On

Influence of the central mode and soft phonon on the microwave dielectric loss near the strain-induced ferroelectric phase transitions in Sr n+1 uTi n uO 3n+1 u*

November 12, 2014
Author(s)
V. Goian, S. Kamba, D Nuzhnyy, Nathan Orloff, T. Birol, C.-H Lee, D. G. Schlom, James Booth
Recently, Lee et al. [1] used1% tensile strain to induce a ferroelectic instability in thin films of Srdn+1uTi nuO 3n+1u (n=1-6) phases. They showed that the Curie temperature T cu gradually increased with n, reaching 180 K for Sr7Ti6O19 (n=6). The

Software for Dielectric characterization by microwave cavity perturbation corrected for non-uniform fields*

September 1, 2014
Author(s)
Nathan D. Orloff, Jan Obrzut, Christian J. Long, Thomas F. Lam, Pavel Kabos, David R. Novotny, James C. Booth, James A. Liddle
This software package was developed to analyze microwave cavity perturbation data in order to determine material dielectric properties. Example software is provided to assist with data acquisition and organization. Specifically, it is de-signed to be used

Dielectrofluidics for Electronic-Based Chemical and Particle Analysis

August 18, 2014
Author(s)
James C. Booth, Spencer T. Egan, Charles A. Little, A Padilla, Yu Y. Wang, Nathan D. Orloff
The interactions of electromagnetic fields with matter are described by means of the polarization and magnetization of the material under study. Analogous to the way that magnetofluidics seeks to exploit magnetic interactions for sensing and manipulating